Sunday, December 29, 2013

GMO nonsense retracted

So the headlines last year claiming that a study showed that “rats fed genetically modified corn grew massive tumours” were nonsense all along.

The article originally published in Food and Chemical Toxicology has now been withdrawn. The publishers, Elsevier, issued a statement saying (and I'm paraphrasing) that the researchers hadn't made anything up but they had been guilty of very dodgy science.

As I wrote last year:
Firstly the researchers from the University of Caen in France neglected to mention that this particular strain of rat (“Sprague-Dawley”) get exactly this sort of tumor at the drop of a hat. They’re known to develop these enormous growths when allowed unlimited food or if they develop a hormone imbalance after consuming maize contaminated with a particular common fungus, or even if they are just allowed to live to old age. Whether or not they were given GM food, they would probably have developed the gruesome growths anyway. The researchers neglected to mention this in their report. Suspicious yet?

Then there was the rather selective report the “scientists” gave of their results. Their report only gave the results of SOME of the test groups of rats, other test groups exposed to GM food actually ended up healthier than the control group who had not received any GM food. They also neglected to publish any actual statistics from these groups so we could see the actual results. Suspicious yet?

Then there’s a technical detail. Generally in tests like this, the test group (that receive the thing being tested) is roughly the same size as the control group (the ones that don’t). It makes the mathematics simpler. In this case the test group was four times larger than the control group. Professor Anthony Trewavas from the University of Edinburgh, was quoted by New Scientist magazine, saying “these results are of no value”. Suspicious yet?

Sorry to be picky but consider one other thing. The researchers didn’t allow reporters to seek comments from other scientists about the “findings” until after the report was published. Did they have something to hide? Like bad science?
This is what happens when "scientists" are motivated by an agenda rather than by a desire to establish facts.

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